CN212110061U - Variable source ultrasonic testing transducer - Google Patents
Variable source ultrasonic testing transducer Download PDFInfo
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- CN212110061U CN212110061U CN202021217831.1U CN202021217831U CN212110061U CN 212110061 U CN212110061 U CN 212110061U CN 202021217831 U CN202021217831 U CN 202021217831U CN 212110061 U CN212110061 U CN 212110061U
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Abstract
The utility model discloses a variable source ultrasonic testing transducer in the ultrasonic testing technical field, include: an outer tube; the transmitting vibrator is fixedly connected to one end of the outer pipe, a through hole is formed in the transmitting vibrator along the axis, and the transmitting vibrator is used for transmitting test ultrasonic waves; the inner pipe is inserted into the outer pipe and can freely slide along the axis direction of the outer pipe; one end of the long sliding rod penetrates through the through hole of the transmitting vibrator and is connected with one end of the inner pipe; and the receiving vibrator is fixedly connected to the other end of the long sliding rod and is coaxially arranged with the long sliding rod, and the receiving vibrator is used for receiving the test ultrasonic wave. The distance between the transmitting vibrator and the receiving vibrator is adjusted at will by pulling the outer pipe or the inner pipe, so that the source distance of the transducer can be continuously changed, and longitudinal waves and transverse waves can be conveniently detected and identified at any test point.
Description
Technical Field
The utility model relates to an ultrasonic testing technical field, in particular to variable source ultrasonic testing transducer.
Background
As one of acoustic sensing technologies, an ultrasonic detection (sensing) technology is a technology for detecting physical characteristics such as distance and flow velocity by using better directivity and stronger penetration ability of ultrasonic waves and easily obtaining characteristics such as a larger concentration. When the emitted ultrasonic waves change certain parameters due to external physical quantities (such as measuring distance, liquid flow rate, object thickness and the like), the ultrasonic waves are sensed by the transducer and cause changes of electrical quantities. Therefore, the specific parameters of the external physical quantity to be measured can be deduced through the change of the conveniently measured electrical quantity, and the purpose of measuring the external physical quantity is achieved.
The transducer adopted by the traditional ultrasonic testing equipment generally only provides a transmitting vibrator with a fixed position and two receiving vibrators with fixed positions, and only longitudinal waves of the medium and a distorted transverse wave superposed on the waveform of the longitudinal waves can be measured in an experiment through the traditional transducer. Therefore, when the source distance needs to be changed for multiple tests, a transmitting oscillator array consisting of a plurality of transmitting oscillators is often adopted, and the transmitting oscillators at different positions in the transmitting oscillator array are selected by electronic hardware and programming software to work, so that the purpose of changing the source distance is achieved.
However, the source distance point changed by the emitting oscillator array is limited by the number of the emitting oscillators and the distance between the oscillators, that is, the source distance cannot be continuously changed, so that the longitudinal wave and the transverse wave cannot be finely changed in time length, and thus it is difficult to effectively distinguish the transverse wave or separate the received longitudinal wave and the transverse wave at the same emitting position.
SUMMERY OF THE UTILITY MODEL
The application solves the problem that the source distance can not be continuously changed in the prior art by providing the variable source ultrasonic testing transducer, and realizes that the testing source distance can be changed at any testing point, thereby being convenient to detect and identify longitudinal waves and transverse waves at any testing point.
The embodiment of the application provides a variable source ultrasonic testing transducer, including:
an outer tube;
the transmitting vibrator is fixedly connected to one end of the outer pipe, a through hole is formed in the transmitting vibrator along the axis, and the transmitting vibrator is used for transmitting test ultrasonic waves;
the inner pipe is inserted into the outer pipe and can freely slide along the axis direction of the outer pipe;
one end of the long sliding rod penetrates through the through hole of the transmitting vibrator and is connected with one end of the inner tube;
and the receiving vibrator is fixedly connected to the other end of the long sliding rod and is coaxially arranged with the long sliding rod, and the receiving vibrator is used for receiving the test ultrasonic wave.
The transducer has the advantages that: the transmitting vibrator is fixedly connected with the outer pipe, the receiving vibrator is fixedly connected with the inner pipe through the long sliding rod, and the distance between the transmitting vibrator and the receiving vibrator is adjusted at will in a pulling mode of the outer pipe or the inner pipe, so that the continuous change of the source distance of the transducer can be realized, and the longitudinal wave and the transverse wave can be conveniently detected and identified at any test point; the transducer is suitable for barrier-free multipoint testing in small-caliber rock drilling so as to obtain waveforms of longitudinal waves and transverse waves transmitted by ultrasonic waves along the wall of a rock hole.
On the basis of the above embodiments, the present application may further improve, specifically as follows:
in one of the embodiments of this application, transmission oscillator and receiving oscillator all include from interior to the outer sound absorption layer, piezoelectricity, the shell that cup joints in proper order, the both ends of sound absorption layer, piezoelectricity, shell are provided with respectively and cover one and cover two, wherein, the sound absorption layer of transmission oscillator cup joint in the slip stock, the sound absorption layer of receiving oscillator cup joints in the center pillar.
In one embodiment of the present application, the housing is a corrosion resistant, acoustically transparent material. Such as epoxy materials and the like.
In one embodiment of the application, the receiving vibrator comprises a first receiving vibrator and a second receiving vibrator which are coaxially arranged at intervals, and one end, far away from the second receiving vibrator, of the first receiving vibrator is fixedly connected with the long sliding rod. When the coaxial motion in the hole is tested, a gap is formed between the outer circular surface of the receiving vibrator and the outer circular surface of the transmitting vibrator and the inner circular surface of the tested medium hole, when two sounds are formed, the two sounds formed by the gap are errors in the sound of the tested medium, therefore, one transmitting vibrator and two receiving vibrators are selected, the sound time obtained by the two receiving vibrators is subtracted, the difference is the sound transmitted by the tested medium between the two receiving vibrators, and when the error sound formed by the gap can be removed by the method, the data obtained by the test is more accurate.
In one embodiment of the present application, a guide rail warhead sliding cap is arranged at one end of the second receiving vibrator far away from the first receiving vibrator. The resistance is reduced through the guide rail bullet sliding cap, and the transducer can freely slide in the test hole conveniently.
In one embodiment of the present application, the outer wall of the inner tube is provided with a limiting groove along the axial direction, the outer tube is provided with a limiting screw hole matched with the limiting groove, and a bolt is installed in the limiting screw hole. One end of the bolt penetrates through the limiting screw hole and is positioned in the limiting groove, so that the inner pipe and the outer pipe can only linearly displace along the direction of the limiting groove and cannot rotate mutually.
In one embodiment of this application, the one end that the transmission oscillator was kept away from to the outer tube is provided with the locking ring, the locking ring is provided with two screw through-holes, the outer tube be provided with one with the perforation that the screw through-hole corresponds. A short bolt penetrates through one of the thread through holes of the locking ring and then presses the outer pipe tightly, so that the locking ring is fixed with the outer pipe, and a long bolt penetrates through the other thread through hole of the locking ring and the outer pipe perforation in sequence and then presses the inner pipe tightly, so that the locking ring is fixed with the inner pipe, and the outer pipe and the inner pipe are switched between a fixed state or a relative sliding state by adjusting the tightness of the long bolt; compared with the mode that the outer pipe is provided with the threaded through hole and the bolt penetrates through the threaded through hole to tightly press the inner pipe, the locking ring is used for indirectly fixing the inner pipe and the outer pipe so as to prevent the bolt from damaging the outer pipe when the inner pipe is tightly pressed; in addition, under the unlocking state of the locking ring, the long bolt can also be used as a push rod, and the outer pipe is convenient to move under the condition that the inner pipe is fixed.
In one embodiment of the present application, an outer wall of an end of the inner tube, which is far away from the outer tube, is engraved with a length scale. The device is used for conveniently observing and recording the moving distance data of the outer pipe relative to the inner pipe, namely the change value of the source distance, thereby conveniently and accurately adjusting the source distance.
In one embodiment of the present application, the outer tube and the inner tube are made of metal.
In one embodiment of the present application, the long sliding rod is made of a high-sound-resistance material. Preferably a composite rigid plastic.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
1. the distance between the transmitting vibrator and the receiving vibrator is adjusted at will by pulling the outer pipe or the inner pipe, so that the source distance of the transducer can be continuously changed, and the longitudinal wave and the transverse wave can be conveniently detected and identified at any test point;
2. the resistance is reduced through the guide rail bullet sliding cap, so that the transducer can conveniently and freely slide in the test hole;
3. the locking ring switches the outer pipe and the inner pipe between a fixed state or a relative sliding state;
4. the moving distance data of the outer pipe relative to the inner pipe, namely the change value of the source distance, can be conveniently observed and recorded through the length scale, so that the source distance can be conveniently and accurately adjusted.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of area A of FIG. 1;
FIG. 3 is an enlarged view of area B of FIG. 1;
fig. 4 is an enlarged view of the region C in fig. 1.
The acoustic transducer comprises an outer tube 1, a limiting bolt 11, an inner tube 2, a limiting groove 21, a length scale 22, a long sliding rod 3, a transmitting vibrator 4, a first receiving vibrator 5, a second receiving vibrator 6, a center post 61, a sound absorption layer 62, a piezoelectric body 63, a shell 64, a cover I65, a cover II 66, a lead 7, a guide rail elastic head cap 8, a locking ring 9, a short bolt 91 and a long bolt 92.
Detailed Description
The present invention will be further explained with reference to the following embodiments, which are to be understood as illustrative only and not as limiting the scope of the invention, and modifications of the various equivalent forms of the present invention by those skilled in the art after reading the present invention fall within the scope of the appended claims.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "vertical" and "outer peripheral surface" are used to indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the product of the present invention is usually placed when in use, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element to be referred must have a specific position, be constructed in a specific orientation, and be operated, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the various embodiments or examples and features of the various embodiments or examples described herein can be combined and combined by those skilled in the art without conflicting aspects.
The embodiment of the application solves the problem that the source distance cannot be continuously changed in the prior art by providing the variable source ultrasonic testing transducer, and realizes that the testing source distance can be changed at any testing point, thereby conveniently detecting and identifying longitudinal waves and transverse waves at any testing point.
In order to solve the above problems, the technical solution in the embodiment of the present application has the following general idea:
the first embodiment is as follows:
as shown in fig. 1-4, a variable source ultrasonic test transducer comprising: the device comprises an outer tube 1, an inner tube 2, a long sliding rod 3, a transmitting vibrator 4, a first receiving vibrator 5 and a second receiving vibrator 6; the outer pipe 1 and the inner pipe 2 are matched with each other and are made of metal materials, the outer pipe 1 is sleeved at one end of the inner pipe 2, and the outer pipe 1 and the inner pipe 2 can freely slide along the axis direction; the transmitting vibrator 4 is fixedly connected to one end, far away from the inner pipe 2, of the outer pipe 1, the transmitting vibrator 4 is provided with a through hole matched with the long sliding rod 3 along the axis, a lead 7 of the transmitting vibrator 4 sequentially penetrates through the inner pipe of the outer pipe 1 and the inner pipe 2 and extends outwards to be connected with an external test system, and the transmitting vibrator 4 is used for transmitting test ultrasonic waves; one end of the long sliding rod 3 penetrates through the through hole of the transmitting vibrator 4 and is connected with one end of the inner tube 2; the other end of the long sliding rod 3 is fixedly connected with one end of a first receiving vibrator 5, a second receiving vibrator 6 is fixedly connected with the first receiving vibrator 5 coaxially at intervals, one end, far away from the first receiving vibrator 5, of the second receiving vibrator 6 is also provided with a guide rail bullet cap 8, wires 7 of the first receiving vibrator 5 and the second receiving vibrator 6 sequentially penetrate through the rod of the long sliding rod 3 and the tube of the inner tube 2 and extend outwards to be connected with an external test system, and the first receiving vibrator 5 and the second receiving vibrator 6 are both used for receiving test ultrasonic waves; the outer wall of the inner pipe 2 is provided with a limiting groove 21 along the axis direction, the outer pipe 1 is provided with a limiting screw hole matched with the limiting groove 21, a limiting bolt 11 is arranged in the limiting screw hole, and the tail end of the limiting bolt 11 penetrates through the limiting screw hole and is positioned in the limiting groove 21; a locking ring 9 is arranged at one end, away from the transmitting vibrator 4, of the outer pipe 1, the locking ring 9 is provided with two threaded through holes, the outer pipe 1 is provided with a through hole corresponding to the threaded through hole, a short bolt 91 penetrates through one of the threaded through holes of the locking ring 9 and then presses the outer pipe 1 to fix the locking ring 9 and the outer pipe 1, and a long bolt 92 penetrates through the other threaded through hole of the locking ring 9 and the through hole of the outer pipe 1 in sequence and then presses the inner pipe 2 to fix the locking ring 9 and the inner pipe 2; the outer wall of one end of the inner tube 2 far away from the outer tube 1 is carved with a length scale 22.
Wherein, the transmitting vibrator 4, the first receiving vibrator 5 and the second receiving vibrator 6 equally respectively comprise a sound absorption layer 62, a piezoelectric body 63 and a shell 64 which are sequentially sleeved from inside to outside, two ends of the sound absorption layer 62, the piezoelectric body 63 and the shell 64 are respectively provided with a first cover 65 and a second cover 66, the sound absorption layer 62 of the transmitting vibrator 4 is sleeved on the sliding long rod 3, the sound absorption layers 62 of the first receiving vibrator 5 and the second receiving vibrator 6 are sleeved on the middle column 61, and the shell 64 is made of corrosion-resistant sound-transmitting materials.
The technical scheme in the embodiment of the application at least has the following technical effects or advantages:
1. the distance between the transmitting vibrator and the receiving vibrator is adjusted at will by pulling the outer pipe or the inner pipe, so that the source distance of the transducer can be continuously changed, and the longitudinal wave and the transverse wave can be conveniently detected and identified at any test point;
2. the resistance is reduced through the guide rail bullet sliding cap, so that the transducer can conveniently and freely slide in the test hole;
3. the locking ring switches the outer pipe and the inner pipe between a fixed state or a relative sliding state;
4. the moving distance data of the outer pipe relative to the inner pipe, namely the change value of the source distance, can be conveniently observed and recorded through the length scale, so that the source distance can be conveniently and accurately adjusted.
Claims (10)
1. A variable source ultrasonic test transducer comprising:
an outer tube;
the transmitting vibrator is fixedly connected to one end of the outer pipe, a through hole is formed in the transmitting vibrator along the axis, and the transmitting vibrator is used for transmitting test ultrasonic waves;
the inner pipe is inserted into the outer pipe and can freely slide along the axis direction of the outer pipe;
one end of the long sliding rod penetrates through the through hole of the transmitting vibrator and is connected with one end of the inner tube;
and the receiving vibrator is fixedly connected to the other end of the long sliding rod and is coaxially arranged with the long sliding rod, and the receiving vibrator is used for receiving the test ultrasonic wave.
2. The transducer of claim 1, wherein: the transmitting vibrator and the receiving vibrator respectively comprise a sound absorption layer, a piezoelectric body and a shell which are sequentially sleeved from inside to outside, two ends of the sound absorption layer, the piezoelectric body and the shell are respectively provided with a cover I and a cover II, wherein the sound absorption layer of the transmitting vibrator is sleeved on the sliding long rod, and the sound absorption layer of the receiving vibrator is sleeved on the middle column.
3. The transducer of claim 2, wherein: the shell is made of corrosion-resistant sound-transmitting materials.
4. The transducer of claim 1, wherein: the receiving vibrator comprises a first receiving vibrator and a second receiving vibrator which are coaxially arranged at intervals, and one end of the first receiving vibrator, which is far away from the second receiving vibrator, is fixedly connected with the long sliding rod.
5. The transducer of claim 4, wherein: and one end of the second receiving vibrator, which is far away from the first receiving vibrator, is provided with a guide rail warhead sliding cap.
6. The transducer of claim 1, wherein: the outer wall of the inner pipe is provided with a limiting groove along the axis direction, the outer pipe is provided with a limiting screw hole matched with the limiting groove, and a bolt is installed in the limiting screw hole.
7. The transducer of claim 1, wherein: the one end that the transmission oscillator was kept away from to the outer tube is provided with the locking ring, the locking ring is provided with two screw thread through-holes, the outer tube be provided with one with the perforation that the screw thread through-hole corresponds.
8. The transducer of claim 1, wherein: and a length scale is carved on the outer wall of one end of the inner pipe, which is far away from the outer pipe.
9. The transducer of claim 1, wherein: the outer pipe and the inner pipe are made of metal materials.
10. The transducer of claim 1, wherein: the sliding long rod is made of high-sound-resistance materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021217831.1U CN212110061U (en) | 2020-06-28 | 2020-06-28 | Variable source ultrasonic testing transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021217831.1U CN212110061U (en) | 2020-06-28 | 2020-06-28 | Variable source ultrasonic testing transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212110061U true CN212110061U (en) | 2020-12-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021217831.1U Active CN212110061U (en) | 2020-06-28 | 2020-06-28 | Variable source ultrasonic testing transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212110061U (en) |
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2020
- 2020-06-28 CN CN202021217831.1U patent/CN212110061U/en active Active
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