CN203443934U - Twinned crystal combined ultrasonic transducer - Google Patents
Twinned crystal combined ultrasonic transducer Download PDFInfo
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- CN203443934U CN203443934U CN201320579431.9U CN201320579431U CN203443934U CN 203443934 U CN203443934 U CN 203443934U CN 201320579431 U CN201320579431 U CN 201320579431U CN 203443934 U CN203443934 U CN 203443934U
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- piezoelectric chip
- angle
- wedge
- ultrasonic transducer
- tapered wedges
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Abstract
The utility model discloses a twinned crystal combined ultrasonic transducer, and relates to the technical field of utrasonic non-destructive testing equipment. The twinned crystal combined ultrasonic transducer comprises an interface, a housing, a side plate, a sound absorption material, tapered wedges, damping blocks, cables, piezo-electric wafers and a wearing layer, wherein the bottom surfaces of the tapered wedges and the side plate are mutually perpendicular; the center rotation axes of the piezo-electric wafers are parallel to the upper plane surfaces of the tapered wedges, and form angles with the bottom surfaces of the tapered wedges by 45 degrees; plane surfaces passing through the center rotation axes of the piezo-electric wafers, perpendicular to the side plate and forming angles with the bottom surfaces of the tapered wedges by 45 degrees are taken as datum plane surfaces; the piezo-electric wafers and the datum plane surfaces are crossed at the center rotation axes and form angles by 3 to 5 degrees; the piezo-electric wafers are fixedly arranged on the upper surfaces of the tapered wedges and between the damping blocks; the wear resistant layer is arranged on the bottom surfaces of the tapered wedges. The twinned crystal combined ultrasonic transducer can realize pipe end detection in two directions at different bevel angles, has the characteristics of simple structure, convenient operation, large detection range, high sensitivity and high detection efficiency, and is particularly suitable for defect detection of steel pipe end bevel surface and other workpieces with bevels.
Description
Technical field
The utility model relates to Ultrasonic Nondestructive equipment technical field.
Background technology
Development along with China's long distance pipeline cause, the significantly increase of oil and gas pipelines demand, traditional product type is replaced by high grade of steel, heavy caliber, wall thickening gradually, brought the variation of the mode of production and the method for inspection, this promotion and driven constantly bringing forth new ideas, developing of Non-Destructive Testing mode, method and instrument.Ultrasonic Nondestructive is under the prerequisite of not part of damage or starting material duty, use ultrasound wave to can not by visual test to surface and a kind of detection means of checking of internal soundness.The principle of ultrasound examination is, if there are the defects (having gas in defect) such as pore, crackle, layering in metal, ultrasonic propagation is during to the interface of metal and defect, will all or part ofly reflect, the ultrasound wave the reflecting reception of being popped one's head in, by the processing of circuit of instrument internal, on the video screen of instrument, will demonstrate differing heights and waveform at regular intervals, can judge the degree of depth, position and the shape of defect in part according to the variation characteristic of waveform.The advantage of ultrasound examination be detect that thickness is large, highly sensitive, speed is fast, cost is low, harmless, and can defect be positioned and be measured.
In the checkout procedure of longitudinal submerged arc welded pipe, need be to circumferential 100% flaw detection of pipe end slope-mouth face, groove face does not allow to exist the defects such as crackle, layering.The defective effect of pipe end slope-mouth face, to the welding of girth joint, may cause Pipeline Failure when serious, and therefore, the raising of groove position defect detection rate is the important leverage of tube quality.When carrying out the flaw detection of groove face crack defect, the general probe that adopts 2.5P8X12 K1 model, K1 probe is responsive to crack defect, shortcoming is that sound beam direction is single, for to be similar to vertical defect detection rate high with its sound beam direction, and defect in parallel is often easily undetected, during operation, need detect from suitable, counterclockwise two directions; Because groove has certain angle, during flaw detection, there is blind area simultaneously.In order to improve the recall rate of groove face defect, change in the past inspection machine to recall rate, and the yoke of checkability, we are studied demonstration to our probe used in everyday, according to the actual demand of production testing, have carried out innovative design.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of simple in structure, easy to operate, sensing range is large, blind area is little, highly sensitive twin lamella transducer.
For solving the problems of the technologies described above, technical solution adopted in the utility model is:
A kind of twin crystal combined type ultrasonic transducer, comprise interface, shell, side plate, acoustic absorbant and angle probe, described angle probe comprises wedge, damping block, cable, piezoelectric chip and wearing layer, the bottom surface of described wedge is mutually vertical with side plate, the center line that the centre rotational axis of setting piezoelectric chip is piezoelectric chip, described center line is parallel on wedge plane and is 45 ° with wedge bottom, set by piezoelectric chip centre rotational axis, vertical with side plate and to be the plane of 45 ° with wedge bottom be reference plane, described piezoelectric chip and reference plane intersect at centre rotational axis, the angle of piezoelectric chip and reference plane is 3 ° ~ 5 °, described piezoelectric chip be fixedly installed on wedge upper surface and and damping block between, described wedge lower surface is provided with wearing layer.
Preferably, described angle probe is two groups, between two groups of angle probes, is provided with sound insulating layer, and damping block and piezoelectric chip in two groups of angle probes are symmetricly set on sound insulating layer both sides obliquely.
Preferably, described wedge lower surface is provided with wearing layer.
Preferably, the angle of described piezoelectric chip and reference plane is 3 °.
Preferably, the angle of described piezoelectric chip and reference plane is 5 °.
The beneficial effect that adopts technique scheme to produce is: by the appropriate design to sonde configuration, wedge makes piezoelectric chip and surface of the work form strict angle, first make piezoelectric chip and surface level (bottom surface of wedge) be 45 °, two groups of damping blocks and piezoelectric chip are symmetricly set on sound insulating layer both sides obliquely, two piezoelectric chips are more all along 3 ° ~ 5 ° of its centre rotational axis rotations (or adopting different rotary angle according to groove angle), wedge and damping block, the angle of piezoelectric chip is consistent, each piezoelectric chip can be launched ultrasonic wave acoustic beam to different directions, the detection of realization to two different directions defects.The utlity model has feature simple in structure, easy to operate, that sensing range is large, blind area is little, highly sensitive and detection efficiency is high, be particularly useful for the detection of pipe end groove face defect, and other have the defects detection of the workpiece of groove, there is higher recall rate, guaranteed pipe end quality.Secondly, when having realized both direction, detect, simplified detection operation, lower labour intensity, improved production efficiency, strengthen pipe end quality control.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the right view of Fig. 1;
Fig. 3 is use constitutional diagram of the present utility model;
Fig. 4 is the assembly drawing of shell and side plate;
In figure: 1-interface, 2-shell, 3-side plate, 4-acoustic absorbant, 5-wedge, 6-damping block, 7-sound insulating layer, 8-cable, 9-piezoelectric chip, 10-wearing layer, 11-workpiece.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As Fig. 1, 2, a kind of twin crystal combined type ultrasonic transducer shown in 4, comprise interface 1, shell 2, side plate 3, acoustic absorbant 4 and angle probe, described angle probe comprises wedge 5, damping block 6, cable 8, piezoelectric chip 9 and wearing layer 10, the bottom surface of described wedge 5 is mutually vertical with side plate 3, the centre rotational axis of setting piezoelectric chip 9 is the center line of piezoelectric chip 9, described center line is parallel on wedge 5 plane and is 45 ° with wedge 5 bottom surfaces, be that the centre rotational axis of piezoelectric chip 9 and the angle of surface level are 45 °, set by piezoelectric chip 9 centre rotational axis, vertical with side plate 3 and to be the plane of 45 ° with wedge 5 bottom surfaces be reference plane, described piezoelectric chip 9 intersects at centre rotational axis with reference plane, piezoelectric chip 9 is 3 ° ~ 5 ° with the angle of reference plane, while making, first make piezoelectric chip 9 and surface level (bottom surface of wedge 5) be 45 °, and then make piezoelectric chip 9 along 3 ° ~ 5 ° of centre rotational axis rotations, described piezoelectric chip 9 be fixedly installed on wedge 5 upper surfaces and and damping block 6 between, in wedge lower surface, be provided with wearing layer 10, during detection, wearing layer 10 be milled on workpiece 11 surfaces with surface of the work and coincide, can improve detection degree of accuracy.Preferably, described angle probe is two groups, between two groups of angle probes, be provided with sound insulating layer 7, damping block 6 in two groups of angle probes and piezoelectric chip 9 are symmetricly set on sound insulating layer 7 both sides obliquely, each piezoelectric chip 9 can be launched ultrasonic wave acoustic beam to different directions, according to the feature of ultrasound examination, realize the raising to the detection sensitivity of different directions defect.
Because pipe end groove has certain angle piezoelectric chip 9 all along its center axial rotary side plate 3 direction rotation angle certain angles, as a kind of preferred structure, can make piezoelectric chip 9 and the angle of reference plane is 3 °, even if two piezoelectric chips 9 are all along 3 ° of its centre rotational axis rotations; As another kind of preferred structure, can make piezoelectric chip 9 and the angle of reference plane is 5 °, even if two piezoelectric chips 9 are all along 5 ° of its centre rotational axis rotations, can also adopt the different anglecs of rotation according to the concrete angle of groove, make acoustic beam cover the scope that pipe end easily produces defect that more concentrates on, reduced detection blind area, actual using method is as Fig. 3.
This utility model is by two monocrystalline K1 angle probe reasonable combination.By the appropriate design to angle probe structure, wedge 5 makes piezoelectric chip 9 and workpiece 11 surfaces form strict angle, first make piezoelectric chip 9 horizontal by 45 ° (improving on the basis of K=1), so latter two piezoelectric chip 9 is more all along 3 ° ~ 5 ° of the axial side plate direction rotation of central rotation angles (or adopting different rotary angle according to groove angle), wedge 5 is consistent with the angle of damping block 6, piezoelectric chip 9, realizes the detection of pipe end defect of the both direction of different groove angles.The utlity model has feature simple in structure, easy to operate, that sensing range is large, blind area is little, highly sensitive and detection efficiency is high, be particularly useful for the detection of pipe end groove face defect, and other have the defects detection of the workpiece 11 of groove, there is higher recall rate, guaranteed pipe end quality.Secondly, when having realized both direction, detect, simplified detection operation, lower labour intensity, improved production efficiency, strengthen pipe end quality control.
Some points for attention below should noting in manufacturing process: 1, the size of piezoelectric chip: 13mm * 13mm * 2mm, symmetrical; 2, angle probe frequency: 2.5MHZ; 3, slope K=1 of piezoelectric chip; 3, angle probe Main beam departs from 2 ° of <; 4, piezoelectric chip be take centre rotational axis and is 3 ° ~ 5 ° as benchmark to side plate 3 anglecs of rotation, also can be according to the concrete selected angle of the variation of workpiece grooves.
Claims (4)
1. a twin crystal combined type ultrasonic transducer, comprise interface (1), shell (2), side plate (3), acoustic absorbant (4) and angle probe, described angle probe comprises wedge (5), damping block (6), cable (8), piezoelectric chip (9) and wearing layer (10), it is characterized in that: the bottom surface of described wedge (5) is mutually vertical with side plate (3), the centre rotational axis of setting piezoelectric chip (9) is the center line of piezoelectric chip (9), described center line is parallel to the upper plane of wedge (5) and is 45 ° with wedge (5) bottom surface, set by piezoelectric chip (9) centre rotational axis, vertical with side plate (3) and to be the plane of 45 ° with wedge (5) bottom surface be reference plane, described piezoelectric chip (9) intersects at centre rotational axis with reference plane, piezoelectric chip (9) is 3 ° ~ 5 ° with the angle of reference plane, described piezoelectric chip (9) be fixedly installed on wedge (5) upper surface and and damping block (6) between, described wedge (5) lower surface is provided with wearing layer (10).
2. twin crystal combined type ultrasonic transducer according to claim 1, it is characterized in that: described angle probe is two groups, between two groups of angle probes, be provided with sound insulating layer (7), the damping block (6) in two groups of angle probes and piezoelectric chip (9) are symmetricly set on sound insulating layer (7) both sides obliquely.
3. twin crystal combined type ultrasonic transducer according to claim 2, is characterized in that: described piezoelectric chip (9) is 3 ° with the angle of reference plane.
4. twin crystal combined type ultrasonic transducer according to claim 2, is characterized in that: described piezoelectric chip (9) is 5 ° with the angle of reference plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320579431.9U CN203443934U (en) | 2013-09-18 | 2013-09-18 | Twinned crystal combined ultrasonic transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320579431.9U CN203443934U (en) | 2013-09-18 | 2013-09-18 | Twinned crystal combined ultrasonic transducer |
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| Publication Number | Publication Date |
|---|---|
| CN203443934U true CN203443934U (en) | 2014-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320579431.9U Expired - Lifetime CN203443934U (en) | 2013-09-18 | 2013-09-18 | Twinned crystal combined ultrasonic transducer |
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| CN (1) | CN203443934U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105180854A (en) * | 2015-10-07 | 2015-12-23 | 华北水利水电大学 | Large-power four-crystal integrated ultrasonic transducer |
| CN105214926A (en) * | 2015-10-07 | 2016-01-06 | 华北水利水电大学 | A kind of combination ultrasonic transceiver transducer |
| CN107727747A (en) * | 2017-11-08 | 2018-02-23 | 中国石油集团渤海石油装备制造有限公司 | A kind of big chip twin crystal longitudinal wave probe of high-frequency |
| CN107917740A (en) * | 2017-12-28 | 2018-04-17 | 西安石油大学 | The double-frequency ultrasound wave transducer of biphase gas and liquid flow flow measurement |
-
2013
- 2013-09-18 CN CN201320579431.9U patent/CN203443934U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105180854A (en) * | 2015-10-07 | 2015-12-23 | 华北水利水电大学 | Large-power four-crystal integrated ultrasonic transducer |
| CN105214926A (en) * | 2015-10-07 | 2016-01-06 | 华北水利水电大学 | A kind of combination ultrasonic transceiver transducer |
| CN107727747A (en) * | 2017-11-08 | 2018-02-23 | 中国石油集团渤海石油装备制造有限公司 | A kind of big chip twin crystal longitudinal wave probe of high-frequency |
| CN107917740A (en) * | 2017-12-28 | 2018-04-17 | 西安石油大学 | The double-frequency ultrasound wave transducer of biphase gas and liquid flow flow measurement |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140219 |
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| CX01 | Expiry of patent term |